KR20180129287A - Dish washer - Google Patents

Abstract

A dishwasher according to principles of the present invention comprises: a sump; a distributor; a reservoir unit; a circulation duct connecting the sump and the distributor; an inflow duct branched from the circulation duct to supply water of the sump to the reservoir unit; a first valve provided to open and close the inflow duct; an outflow duct provided to discharge the water in the reservoir unit; and a second valve provided to open and close the outflow duct. Thus, energy can be saved and hygienic properties can be improved.

Description

DISHWASHER {DISH WASHER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly, to a dishwasher having a water tank capable of recycling water and a drying device capable of blowing air into the dishwasher to dry the dishwasher.

The dishwasher includes a cabinet in which a washing tank is provided, a basket for storing the dishware, a sump for storing the washing water, a nozzle for spraying the washing water, and a pump for supplying the sump washing water to the nozzle. It is household appliances that wash dishes by spraying.

The stroke of the dishwasher is divided into washing, rinsing and drying, and one cycle is ended when the drying cycle is completed. Water is supplied for each administration except drying. The water is used to wash and rinse the tableware during the stroke, and the water used is drained when each stroke is finished.

The dishwasher is equipped with a water tank, which stores the water remaining in the sump after one cycle has been completed, and stores it in the water tank. When a new cycle starts, the water stored in the water tank is recycled.

Also, the dishwasher is provided with a drying device that sucks air outside the dishwasher and blows air into the dishwasher, thereby drying the dishwasher.

One aspect of the present invention discloses a dishwasher having a recycling bucket system having an improved structure in which energy is saved and hygiene is improved.

One aspect of the present invention discloses a dishwasher having a drying apparatus having an improved structure with improved drying efficiency and improved reliability.

A dishwasher according to an aspect of the present invention includes: a sump; at least one nozzle arranged to spray water; a distributor provided to distribute the water to the at least one nozzle by receiving the water of the sump; A circulation flow path connecting the sump and the distributor; an inflow path branched from the circulation flow path to supply water of the sump to the reservoir; A first valve provided in the middle of the inflow channel to open and close the inflow channel; an outflow channel provided to flow out the water in the reservoir; And a second valve provided to open and close the outflow channel; .

The outflow channel is provided to join the inflow channel, and when the first valve and the second valve are both opened, the water in the bottom reservoir can flow out to the sump.

The first valve may be provided between a branch point of the circulation flow path and the inflow path, and a confluence point of the outflow path and the inflow path.

The second valve may be provided between the reservoir portion and the confluence point of the outflow passage and the inflow passage.

The first valve may be provided at a position higher than the sump, and may be provided at a position lower than the distributor.

The second valve may be disposed at a position higher than the first valve.

The reservoir may have an inlet through which the inflow channel communicates and an outlet through which the outflow channel communicates, and the inlet and the outlet may be provided at different positions from each other.

The inlet may be provided at a position higher than the outlet.

The dishwasher may further include a water tank having the reservoir portion.

The water tank may include at least a part of the inflow passage and at least a part of the outflow passage.

The dishwasher further includes a washing tank, and the water tank may include an overflow passage provided to guide the over-supplied water to the inside of the washing tub.

According to an aspect of the present invention, there is provided a sump comprising: a sump; at least one nozzle; a pump provided to circulate the water of the sump; a reservoir provided to receive water from the sump to store water; A circulation flow path for connecting one nozzle, an inflow path branched from the circulation flow path and connected to an inlet of the reservoir, and an outflow path connecting an outlet of the reservoir to a point of the inflow path, Comprises opening or closing the outlet flow path.

The control method of the dishwasher may include shutting off the supply of water to the at least one nozzle through the circulation channel, opening the inflow channel, closing the outflow channel, and operating the pump.

The control method of the dishwasher may include supplying water to the at least one nozzle through the circulation channel, opening the inflow channel, closing the outflow channel, and operating the pump.

The control method of the dishwasher may include opening the inflow channel and the outflow channel.

According to another aspect of the present invention, there is provided a dishwasher comprising: a cabinet; a cleaning vessel provided inside the cabinet and having an opening; And a drying device provided between the cabinet and the washing tub to suck air from the outside of the washing tub and discharge the air into the washing tub through the opening of the washing tub; Wherein the drying device has a suction port formed at an upper end portion and a discharge port formed at a lower end portion connected to an opening of the cleaning tub, the duct extending in the vertical direction; And a blowing fan provided adjacent to the suction port; .

The duct may include an inclined portion provided to guide the water introduced into the duct to the discharge port.

The drying apparatus may further include a damper provided between the suction port and the discharge port to open and close the duct.

The drying apparatus further includes a diffuser provided at the discharge port to spread air discharged through the discharge port. The diffuser includes a hub portion, a rim portion, and a radially extending portion extending from the hub portion to the rim portion. As shown in FIG.

The dishwasher further includes a sump and a water tank, which is provided to receive water from the sump and store water, and is mounted to the outside of the washing tank. The duct and the water tank may be integrally formed.

According to the idea of the present invention, water can be stored and reused in a water tank with a low load, so that energy can be saved, the filter can be easily cleaned, and the hygienic property can be improved because no residue is left in the distributor.

According to the idea of the present invention, the wind spreads evenly inside the dishwasher, thereby increasing the drying efficiency and preventing moisture from accumulating inside the drying apparatus, thereby improving the reliability of the drying apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view schematically showing a main configuration of a dishwasher according to an embodiment of the present invention; FIG.
2 is a conceptual diagram illustrating a flow path and a valve structure for water recycling in a dishwasher according to an embodiment of the present invention.
FIG. 3 is a perspective view showing the main structure of the inside of the washing tub of the dish washer of FIG. 1;
FIG. 4 is a perspective view showing a washing tank and a water tank of the dish washer of FIG. 1. FIG.
FIG. 5 is a perspective view showing a cleaning tank and a water tank of the dishwasher shown in FIG. 1 separated. FIG.
6 is a view showing a flow path structure between a sump of a dishwasher of Fig. 1, a distributor, and a water tank.
7 is a view showing an inner tank plate of the dishwasher of Fig. 1;
8 is an enlarged view of a portion 'A' of FIG. 7;
Fig. 9 is a side sectional view showing a drying apparatus attached to the washing tank of the dishwasher of Fig. 1; Fig.
Fig. 10 is a view showing a water tank cover of the dish washer of Fig. 1. Fig.
Fig. 11 is a perspective view showing the diffuser of the drying apparatus of the dish washer of Fig. 1; Fig.
12 is a side cross-sectional view showing the diffuser of the drying apparatus of the dish washer of FIG. 1;
Figs. 13 to 15 are diagrams showing an operation of filling water in the water tank of the dish washer of Fig. 1; Fig.
Figure 16 is a control block diagram of the dishwasher of Figure 1;
17 is a control flowchart of the dish washer of FIG.
18 is an exploded view of a drying apparatus according to another embodiment of the present invention.
19 and 20 are diagrams showing the operation of the drying apparatus of FIG. 18;
Fig. 21 is a sectional view taken along the line I-I in Fig. 18; Fig.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims, It is to be understood that the invention is not limited thereto.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a side cross-sectional view schematically showing a main configuration of a dishwasher according to an embodiment of the present invention. 2 is a conceptual view illustrating a flow path and a valve structure for water recycling in a dishwasher according to an embodiment of the present invention. FIG. 3 is a perspective view showing the main structure of the inside of the washing tub of the dish washer of FIG. 1; FIG. 4 is a perspective view showing a washing tank and a water tank of the dish washer of FIG. 1. FIG. FIG. 5 is a perspective view showing a cleaning tank and a water tank of the dishwasher of FIG. 1 separated from each other. 6 is a view showing a flow path structure between a sump of a dishwasher of Fig. 1, a distributor, and a water tank. FIG. 7 is a view showing an inner tank plate of the dishwasher of FIG. 1; 8 is an enlarged view of a portion 'A' in FIG. 13 to 15 are views showing the operation of filling the water tank of the dishwasher of FIG. 1 with water. 16 is a control block diagram of the dishwasher of FIG. 17 is a control flowchart of the dish washer of Fig.

1 to 8 and FIGS. 13 to 17, the dishwasher 1 includes a cabinet 10 forming an outer appearance, a washing tank 20 provided inside the cabinet 10, 30a, 30b, 30c, 30d provided to spray wash water, a sump 15 provided to store wash water, a plurality of nozzles 30a, 30b, 30c, 30d provided in the washing tank 20, A circulation pump 16 provided to circulate the washing water of the sump 15 and a drain pump 17 provided to discharge the washing water of the sump 15 to the outside of the cabinet 10 together with the dirt have.

The washing tub 20 may have a substantially box shape opened at the front so that the dishware can be inserted and removed. That is, the washing tank 20 may have a top wall 21, a left wall 22, a right wall 23, a rear wall 24, and a bottom plate 25. The front opening of the washing tub 20 can be opened and closed by the door 11. [

The baskets 12a and 12b may be formed of wires so that water can pass therethrough while supporting the tableware. The baskets 12a and 12b may be arranged in two rows including an upper basket 12a and a lower basket 12b.

The nozzle 30 may include an upper rotation nozzle 30a, an intermediate rotation nozzle 30b, a lower left fixing nozzle 30c, and a lower right fixing nozzle 30d.

The upper rotary nozzle 30a can spray water downward while rotating by the water pressure. The intermediate rotary nozzle 30b can spray water upward and downward while being rotated by the water pressure. The water sprayed from the upper rotary nozzle 30a and the intermediate rotary nozzle 30b can be sprayed toward the dishes accommodated in the baskets 12a and 12b. Water sprayed from the upper rotary nozzle 30a and the intermediate rotary nozzle 30b can directly reach the tableware.

The lower left fixing nozzle 30c and the lower right fixing nozzle 30d may be fixed to the left and right sides of the rear lower portion of the washing tub 20, respectively. The lower left fixed nozzle 30c and the lower right fixed nozzle 30d can spray water forward. The water jetted from the lower left fixed nozzle 30c and the lower right fixed nozzle 30d can be jetted toward the reflection plate 13. [ The reflection plate 13 linearly reciprocates forward and backward and can reflect upward the water sprayed from the lower left fixed nozzle 30c and the lower right fixed nozzle 30d.

The reflection plate 13 can be guided by a rail 14 extending long from front to rear. The reflection plate 13 can receive a driving force from another driving unit and can move.

The sump 15 is provided to store water. The sump 15 may be provided approximately at the center of the bottom plate 25 of the washing tub 20. The bottom plate 25 of the washing tank 20 may be inclined toward the sump 15 so that water dropped on the bottom plate 25 flows into the sump 15. [ The sump 15 can receive water from an external water source (not shown) at the beginning of operation of the dishwasher.

The sump 15 may be provided with a filter 19 to remove dirt from the washing water flowing into the sump 15 from the washing tank 20. The filter 19 may include a plurality of filters having different sizes of filter balls. That is, a coarse filter having a large filter hole for filtering relatively large dirt, a fine filter having a medium size filter hole, and a micro filter having a fine size filter hole are included can do.

The circulation pump 16 is provided to circulate the water through the sump 15. [ The circulation pump 16 can pump the water stored in the sump 15 and supply it to the distributor 36 through the circulation flow path 61. [

The distributor 36 can distribute the water supplied through the circulation flow path 61 from the sump 15 to the respective nozzles 30a, 30b, 30c, and 30d. The dispenser 36 may have various combinations of modes that do not dispense or dispense water to each nozzle 30a, 30b, 30c, 30d.

For example, the distributor 36 may be provided with a supply mode in which water is distributed to at least one of the nozzles 30a, 30b, 30c and 30d of the nozzles 30a, 30b, 30c and 30d, , 30d may have an all-shutoff mode that does not dispense water. Only the upper nozzle 30a is sprayed with water by the distributor 36 or only the middle nozzle 30b is sprayed with water or only the left fixed nozzle 30c is sprayed with water or only the right fixed nozzle 30d is sprayed with water It is possible to perform split washing by spraying.

The distributor 36 may be formed in various known configurations. For example, the distributor 36 may have a cylindrical housing and a cylindrical rotating member rotatably provided inside the housing. The housing may have an inlet connected to the circulating flow path 61 and a plurality of outlets connected to the nozzles 30a, 30b, 30c and 30d. The rotary member may have a plurality of independent internal flow paths.

The internal flow path may be provided so as to extend from any one of the plurality of outflow ports at the inlet port. Or the internal flow path may be provided to extend from the inlet to two or more outlets of the plurality of outlets.

The dispenser 36 may be provided inside the washing tub 20. Thus, the distributor 36 is positioned higher than the sump 15. [ Therefore, the water not distributed to the nozzles 30a, 30b, 30c, and 30d in the distributor 36 may flow to the sump 15 due to its own weight, and the distributor 36 may not have any residue.

With this configuration, the circulation pump 16 is activated, the water in the sump 15 is pumped into the nozzles 30a, 30b, 30c and 30d, water is sprayed from the nozzles 30a, 30b, 30c and 30d, Can be cleaned. The water that cleans and drops the tableware is collected by the sump 15 by the inclination of the bottom plate 25 of the washing tank 20 and can be circulated again by the pumping of the circulating pump 16.

The drain pump 17 is provided to discharge the water stored in the sump 15 to the outside of the dishwasher cabinet 10. The drain pump 17 can drain the water stored in the sump 15 after each washing cycle such as pre-wash, main wash, rinsing, etc. is completed.

The dishwasher (1) has a reservoir (50) for storing the water remaining in the sump (15) without draining after one washing cycle of the dishwasher has ended and allowing it to be recycled at the start of a new washing cycle And a water tank (40).

In general, one cleaning cycle may be a prewash, a main wash, a rinse and a drying cycle. In addition, the rinsing cycle can be a cold rinse using cold water and a hot rinse using hot water for drying. The water in the sump 15 is drained each time each of these strokes is completed and new water can be supplied to the sump 15 from the external water source.

However, since the water used in the rinse cycle, that is, the hot rinse cycle, which is the last stroke of one cleaning cycle, and stored in the sump 15 is relatively dirty and clean, the water is stored in the water tank 40 And can be used in the first stroke of the next wash cycle, that is, the prewash stroke. Thus, there is an effect that water consumption can be reduced by recycling water once used.

The water tank 40 may be provided between the cabinet 10 and the washing tub 20. [ The water tank 40 may be attached to one side wall of the washing tub 20. In this embodiment, the water tank 40 is attached to the right side wall 23 of the washing tub 20, but is not limited thereto.

The water tank 40 includes a reservoir portion 50 for storing water. The reservoir 50 may have an inlet 51 (FIG. 7) through which water flows and an outlet 52 (FIG. 7) through which water flows. The inlet 51 and the outlet 52 may be provided separately. The inlet 51 may be provided on the upper portion of the reservoir portion 50 and the outlet 52 may be provided on the lower portion of the reservoir portion 50.

The water tank 40 may be formed by assembling a water tank inner plate 41 coupled to the washing tank side wall 23 and a water tank cover 46 provided outside the water tank inner plate 41. An inner plate rib 42 for forming an inflow channel 62 and an outflow channel 63 to be described later protrudes from the water tank inner plate 41. An inner plate rib 46 The cover ribs 47 can be protruded to be engaged with the cover ribs 42.

The dishwasher 1 is provided with an inflow channel 62 provided to supply water to the reservoir 50 of the water tank 40 and an outflow channel 62 provided to allow water to flow out from the reservoir 50 of the water tank 40 And a flow path 63.

The inflow passage 62 may be branched at one point 64 of the circulation passage 61 and extend to the inlet 51 of the reservoir portion 50. [ The outflow channel 63 may join the inflow channel 62 at one point 65 of the inflow channel 62 starting at the outlet 52 of the reservoir 50.

The inflow channel 62 has a first inflow channel 62a extending from the branch point 63 to the confluence point 65 of the inflow channel and the outflow channel and a second inflow channel 62b extending from the confluence point 65 to the low- And a second inflow passage 62b extending from the second inflow passage 62b.

In the present embodiment, the water tank 40 includes a part of the inflow passage 62 and the outflow passage 63. That is, a part of the inflow channel 62 and the outflow channel 63 are formed inside the water tank 40. However, the present invention is not limited to this, and the inflow channel 62 and the outflow channel 63 may be formed separately from the water tank 40. [

A first valve 71 and a second valve 72 may be provided in the inflow passage 62 and the outflow passage 63 for interrupting the inflow passage 62 and the outflow passage 63, respectively.

The first valve 71 may be installed in the middle of the inflow passage 62. Specifically, the first valve 71 may be installed in the middle of the first inflow passage 62a. The first valve 71 may be provided between the branch point 64 of the circulation flow path and the inflow path and the confluence point 65 of the inflow path and the outflow path. The first valve 71 may be a check valve capable of flowing water only in one direction and preventing reverse flow.

The second valve 72 may be installed in the middle of the outflow channel 65 and the second valve 72 may be provided between the outlet 52 of the reservoir and the confluence point 65 of the outflow channel and the inflow channel . The second valve 72 may be a check valve capable of flowing water only in one direction and preventing backflow.

The first valve 71 and the second valve 72 may be an open / close valve that opens the flow path so that water flows or closes the flow path so that water does not flow. Therefore, according to the embodiment of the present invention, the water can be guided between the sump 15 and the water tank 40 without using a complicated flow path switching valve, and the risk of malfunction and trouble can be reduced and reliability can be improved .

The first valve 71 is provided at a position higher than the sump 15 and may be provided at a position lower than the distributor 36. [ The second valve 72 may be provided at a position higher than the first valve 71.

As the first valve 71 and the second valve 72, various well-known valves capable of opening and closing a flow path can be used. However, considering that water contains dirt, it is preferable to use a thermostatic valve desirable.

8, an outlet hole 66 may be formed in the water tank 40 to connect the outlet 51 of the reservoir portion 50 to the outflow passage 63. As shown in FIG. The second valve 72 includes a valve body 73 that can be moved forward and backward so that the valve body 73 moves forward and backward to open or close the outlet hole 66 so that the outlet passage 63 can be opened or closed have.

With this configuration, the dishwasher 1 is provided with a washing mode for supplying water from the sump 15 to the nozzles 30a, 30b, 30c, and 30d for washing the dishes and a washing mode for supplying water to the sump 15 A cleaning mode in which water is stored in the reservoir 50 and the filter 19 in the sump is cleaned, and a cleaning mode in which the water stored in the reservoir 50 is supplied to the reservoir 50, And may have a recovery mode in which recovery is performed to the sump 15.

16, the dishwasher 1 includes a distributor 36, a first valve 71, a second valve 72, a circulation pump 16, and a drain pump 17 And a control unit 2 for controlling the operation of the apparatus.

In the cleaning mode, the control unit 2 switches the distributor 36 to a supply mode for dispensing water to at least one of the nozzles 30 of at least one of the nozzles, closes the first valve 71, 16 can be operated. In the washing mode, the water in the sump 15 is supplied to the nozzle 30 through the circulation flow path 61 and the distributor 36, and water is sprayed from the nozzle 30 to wash the dishes.

In the storage mode, the control unit 2 switches the distributor 36 to an all-off mode in which no water is dispensed to any of the nozzles 30 of at least one of the nozzles, the first valve 71 is opened and the second valve 72 can be closed and the circulation pump 16 can be operated. In the storage mode, the water in the sump 15 can be stored in the reservoir 50 through the inflow conduit 62.

In the storage mode, as shown in Fig. 13, the water of the sump 15 can rise to the inlet 51 of the reservoir portion 50 through the inflow passage 62. [

14, when the water of the sump 15 continues to flow through the inflow passage 62 after the water has risen up to the inlet 51 of the reservoir 50, the water from the bottom of the reservoir 50 It begins to fill up.

As shown in FIG. 15, when the water continuously flows and the water level of the water storage portion 50 reaches a predetermined height, the overflow water can be guided into the inside of the washing tank 20 through the overflow passage 68. That is, the water tank 40 includes an overflow passage 68 for guiding over-supplied water into the inside of the washing tank 20, and the overflow passage 68 is provided separately from the outflow passage 52 . The water guided through the overflow passage 82 can be guided into the interior of the washing tub 20 through the discharge port 83 of a drying apparatus to be described later.

The water circulating from the inflow passage 62 toward the reservoir 50 only falls to the inlet 51 of the reservoir 50 and then falls due to its own weight in the storage mode, 15) to the inlet (51) of the reservoir (50).

In the cleaning mode, the control unit 2 switches the distributor 36 to a supply mode for distributing water to at least one of the nozzles 30 of at least one nozzle, opens the first valve 71, (72) is closed and the circulation pump (16) can be operated.

In the cleaning mode, a part of the water in the sump 15 is supplied to the nozzle 30 through the circulation flow path 61 and the distributor 36 and the remaining part is stored in the reservoir 50 through the inflow path 62 .

In the cleaning mode, only a part of the water in the sump 15 is supplied to the nozzle 30, so that the spraying power of the nozzle 30 can be weakened. The water jetted from the lower nozzles 30c and 30d can reach the sump 15 located at the center of the washing tub 20 by the weak jetting force so that the filter 19 ). ≪ / RTI >

In the recovery mode, the control unit 2 can open the first valve 71 and the second valve 72. [ The water stored in the reservoir 50 can be recovered to the sump 15 by its own weight through the outflow channel 63 and the inflow channel 62. [

The control flow of washing and rinsing strokes of the dishwasher can be configured in various ways. An example may be as shown in Fig. In Fig. 17, the washing may include a washing step and a rinsing step.

The dishwasher 1 confirms the operation mode (100). The operation mode may be any one of three modes: a cleaning mode, a cleaning & storage mode, and a cleaning & cleaning mode.

Next, it is checked whether the operation mode is the cleaning mode (110), and in the case of the cleaning mode, the distributor (36) is switched to the supply mode for distributing the water to at least one of the nozzles (30) The first valve 71 is closed and the circulation pump 16 is activated (111). The washing is continued for a predetermined time (112), and it is confirmed whether the washing is completed after a predetermined time (113). When the washing is completed, the drain pump 17 is operated to drain the water in the sump 15 (114).

If it is determined that the operation mode is not the cleaning mode, it is checked whether the operation mode is the cleaning & storage mode (120). And switches the dispenser 36 to a supply mode for dispensing water to at least one of the at least one of the nozzles 30 when the operation mode is the cleaning & storage mode, the first valve 71 is closed, The pump 16 is operated (121). The washing is continued for a predetermined time (122), and it is confirmed whether the washing is completed after a predetermined time (123). The first valve 71 is opened and the second valve 72 is opened and the second valve 72 is opened and the second valve 72 is closed. And the circulation pump 16 is operated (124). Water is stored in the reservoir unit (50) until the reservoir unit (50) is full of water (125) and it is checked whether the reservoir unit (50) is full of water (126).

If it is determined that the operation mode is the cleaning & storage mode, the operation mode is determined to be the cleaning & cleaning mode (130). And switches the dispenser 36 to a supply mode for dispensing water to at least one of the at least one of the nozzles 30 when the operation mode is the cleaning & storage mode, the first valve 71 is closed, The pump 16 is operated (131). The washing is performed for a predetermined time (132), and it is confirmed whether washing has been completed after a predetermined time (133). The first valve 71 is opened and the second valve 72 is opened and the second valve 72 is opened and the second valve 72 is opened. And the circulation pump 16 is operated (134). Storage and cleaning are performed 135 until a predetermined time has elapsed or the water reservoir 50 is full of water, and the storage and filter cleaning are verified 136.

The control flow is an example of a control flow using the dishwasher of the present invention, and may include a plurality of washing and rinsing strokes per cleaning cycle, so that the control flow can be repeated as many times as the cleaning and rinsing strokes. Alternatively, the control flow may be applied to the last rinse cycle during one wash cycle.

Fig. 9 is a side sectional view showing a drying apparatus attached to the washing tub of the dish washer of Fig. 1; Fig. Fig. 10 is a view showing a water tank cover of the dish washer of Fig. 1. Fig. Fig. 11 is a perspective view showing the diffuser of the drying apparatus of the dish washer of Fig. 1; Fig. Fig. 12 is a side sectional view showing the diffuser of the drying apparatus of the dish washer of Fig. 1; Fig.

4 to 12, a drying apparatus for a dishwasher according to an embodiment of the present invention will be described.

The dishwasher (1) includes a drying device (80) for sucking air from the outside of the washing tank (20) and discharging the air into the washing tank (20). The drying device (80) winds the dishwasher (1) housed in the washing tank (20) during the drying stroke of the dishwasher (1), so that the dishware is easily dried.

The drying device 80 may be attached to one side wall of the washing tub 20 and the air discharged from the drying device 80 is supplied to one side wall 23 of the washing tub 20 to which the drying device 80 is attached, The opening 23a (Figs. 5 and 9) may be formed.

The drying apparatus 80 may include a blowing fan 90 for flowing air and a duct 81 for guiding the air sucked by the blowing fan 90. The blowing fan 90 may be a centrifugal fan that sucks air in the axial direction and discharges it in the circumferential direction.

In this embodiment, the duct 81 of the drying device 80 is formed integrally with the water tank 40, but the present invention is not limited thereto. The drying device 80 may be formed separately from the water tank 40 .

The duct 81 is formed so as to extend in the vertical direction. The duct 81 can be formed to have a wider width as it goes down. The duct 81 has a suction port 82 through which the air is sucked and a discharge port 83 through which air is discharged. The suction port 82 is formed at the upper end of the duct 81. The discharge port 83 is connected to the duct 81, As shown in FIG. Both the suction port 82 and the discharge port 83 can be formed toward the cleaning tank 20. [ The duct 81 may include an inner duct 81a coupled to the washing tub side wall 23 and an outer duct 81b coupled to the inner duct 81a.

The suction port 82 is formed to be spaced apart from the side wall 23 of the washing tub 20 by a predetermined distance so as to suck the outside air of the washing tub 20 and the discharge port 83 is communicated with the opening 23a of the washing tub side wall 23 . The air blowing fan 90 is provided adjacent to the upper end of the duct 81, that is, the air inlet 82.

With this structure, the water introduced into the duct 81 through the sidewall opening 23a of the washing tub during the washing and rinsing process of the dishwasher can be prevented from penetrating to the air blowing fan 90.

The duct 81 may have an inclined portion 84 that allows the water introduced into the duct 81 to flow into the discharge port 83 again due to its own weight without accumulating in the duct 81.

The drying device 80 may include a damper 86 provided between the suction port 82 and the discharge port 83 so as to open and close the duct 81 and a drive unit 87 for driving the damper 86. The damper 86 can close the duct 81 to prevent the water introduced through the discharge port 83 from entering the ventilation fan 90 provided adjacent to the suction port 82 in the washing and rinsing cycle of the dishwasher have. The damper 86 can open the duct 81 in the drying step so that the air sucked by the blowing fan 90 can be blown into the inside of the washing tub 20. [

The discharge port 83 may be provided with a diffuser 91 for spreading the air discharged through the discharge port 83 over a wide range to increase the drying efficiency.

The diffuser 91 can spread air to a wide range so that a large number of dishes can be directly blown. The diffuser 91 can cause the air to spread in a swirl shape.

11 and 12, for example, the diffuser 91 has a central hub portion 92, an outer rim portion 93, and a portion between the hub portion 92 and the rim portion 93 And includes a plurality of radially extending wings (94), and the wings (94) can be formed to be inclined. The wing portion 94 may be formed to be inclined at a predetermined angle? With respect to the horizontal plane H.

18 is an exploded view of a drying apparatus according to another embodiment of the present invention. 19 and 20 are views showing the operation of the drying apparatus shown in Fig. 21 is a sectional view taken along the line I-I in Fig.

18 to 21, a drying apparatus according to another embodiment of the present invention will be described. Description of the same configuration as the above-described embodiment can be omitted.

The drying apparatus 280 may include a blowing fan 290 for flowing air and a duct 281 for guiding the air sucked by the blowing fan 290. The duct 281 may include an inner duct 281a coupled to a side wall of the washing tub 20 and an outer duct 281b coupled to the inner duct 281a.

The duct 281 may have a suction port 282 through which air is sucked and a plurality of discharge ports 283a and 283b through which air is sucked. That is, the drying device 280 can discharge air to a plurality of areas through a plurality of discharge ports 283a and 283b unlike the above-described embodiment. Therefore, the inside of the washing tub 20 can be dried evenly without a dead zone.

Although a plurality of discharge ports are provided in this embodiment, the number of discharge ports is not limited, and may be provided more. The plurality of discharge ports 283a and 283b may be formed at appropriate positions so as to evenly dry the inside of the cleaning tank 20. [ For example, the first discharge port 283a may be provided at a position where air can be sent to the lower portion of the washing tub 20, and the second discharge port 283b may be provided at a position where air can be sent to the middle of the washing tub 20 As shown in FIG. However, there is no limitation on the positions of the first discharge port 283a and the second discharge port 283b.

The duct 281 includes a plurality of guide channels 285a and 285b for guiding the air sucked in the suction port 282 to the plurality of discharge ports 283a and 283b and a guide channel 285b for dividing the plurality of guide channels 285a and 285b. Lt; RTI ID = 0.0 > 284 < / RTI >

The drying apparatus 280 includes a flow path switching damper 286 provided to select one of the first and second guide flow paths 285a and 285b, Lt; / RTI >

The air sucked through the suction port 282 can be guided through the first guide passage 285a and the second guide passage 285b by the passage switching damper 286. [

19, the flow path switching damper 286 blocks the second guide passage 285b and opens the first guide passage 285a so that the air sucked through the suction port 282 flows into the first discharge port 283a, As shown in FIG.

The flow path switching damper 286 blocks the first guide passage 285a and opens the second guide passage 285b so that air sucked through the suction port 282 flows into the second discharge port 283b, As shown in FIG.

With this configuration, the dishwasher 1 can adjust the discharge order and the discharge time for discharging air through the plurality of discharge ports 283a and 283b. For example, the air can be discharged first and the air is discharged to the region where the tableware is not relatively well dried at the early stage of the drying process at a relatively high temperature, so that the drying efficiency is increased and the drying time is shortened.

Diffusers 291a and 291b may be provided in the respective discharge ports 283a and 283b to switch the direction of the air discharged through the discharge ports 283a and 283b or to spread the discharged air over a wide range to increase the drying efficiency .

The diffusers 291a and 291b may have a proper shape so that the air discharged through the discharge ports 283a and 283b can be directed to the tableware in consideration of the position of the tableware in the washing tub 20 and the positions of the discharge ports 283a and 283b .

For example, the diffuser 291a provided in the first discharge port 283a may have an inclined wing 294 to form an upstream air flow, and a diffuser 291b provided in the second discharge port 283b may be provided. May be provided to form a straight airflow.

Although the technical idea of the present invention has been described above with reference to specific embodiments, the scope of rights of the present invention is not limited to these embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

1: dishwasher 10: cabinet
11: Door 15: Sump
16: Circulating pump 17: Drain pump
20: Cleaning tank 30, 30a, 30b, 30c, 30d:
36: Dispenser 40: Water tank
41: Water tank inner plate 46: Water tank cover
50: low reservoir 51: low reservoir inlet
52: low water outlet 61: circulation channel
62, 62a, 62b: Inflow channel 63: Outflow channel
64: Junction point 65: Junction point
71: first valve 72: second valve
80: drying apparatus 81, 81a, 81b: duct
82: inlet port 83: outlet port
84: inclined portion 85: guide rib
86: damper 87: damper driving part
90: blower fan 91: diffuser

Claims (20)

Sump;
At least one nozzle arranged to inject water;
A dispenser to receive water from the sump and distribute the water to the at least one nozzle;
A reservoir portion provided to receive water of the sump and store water;
A circulation channel connecting the sump and the distributor;
An inflow path branched from the circulation flow path to supply the water of the sump to the reservoir;
A first valve provided in the middle of the inflow passage to open and close the inflow passage;
An outflow channel provided to discharge the water in the reservoir portion; And
A second valve provided to open and close the outflow channel; . The method according to claim 1,
The outflow channel is provided to join the inflow channel,
And water in the reservoir portion flows out to the sump when both the first valve and the second valve are opened. 3. The method of claim 2,
Wherein the first valve is provided between a branch point of the circulation channel and the inflow channel and a confluence point of the outflow channel and the inflow channel. 3. The method of claim 2,
Wherein the second valve is disposed between the reservoir portion and a confluence point of the outflow channel and the inflow channel. The method according to claim 1,
Wherein the first valve is provided at a position higher than the sump and is provided at a lower position than the distributor. The method according to claim 1,
Wherein the second valve is provided at a higher position than the first valve. The method according to claim 1,
Wherein the water reservoir has an inlet through which the inflow channel communicates and an outlet through which the outflow channel communicates,
Wherein the inlet and the outlet are separate from each other and are provided at different positions. 8. The method of claim 7,
Wherein the inlet is provided at a position higher than the outlet. The method according to claim 1,
And a water tank having the water storage portion. 10. The method of claim 9,
Wherein the water tank includes at least a part of the inflow channel and at least a part of the outflow channel. 10. The method of claim 9,
Further comprising a washing tub,
Wherein the water tank includes an overflow channel provided to guide the over-supplied water into the inside of the washing tub. 1. A sump comprising: a sump; at least one nozzle; a pump arranged to circulate the sump water; a reservoir adapted to receive water from the sump to store water; An inlet flow path branched from the circulation flow path and connected to an inlet of the reservoir portion and an outlet flow path connecting an outlet of the reservoir portion and a point of the inflow flow path,
And opening or closing the outflow channel. 13. The method of claim 12,
The supply of water to the at least one nozzle through the circulation channel is blocked,
The inflow channel is opened,
Closing the outflow channel,
And operating the pump. 13. The method of claim 12,
Allowing water supply to the at least one nozzle through the circulation passage,
The inflow channel is opened,
Closing the outflow channel,
And operating the pump. 13. The method of claim 12,
And opening the inflow channel and the outflow channel. cabinet;
A cleaning tank provided inside the cabinet and having an opening; And
A drying device installed between the cabinet and the washing tub to suck air from the outside of the washing tub and discharge the air into the washing tub through the opening of the washing tub; Lt; / RTI >
The drying apparatus includes:
A duct having a suction port formed at an upper end thereof and a discharge port formed at a lower end thereof to be connected to an opening of the washing tub, the duct extending in a vertical direction; And
A blowing fan provided adjacent to the suction port; . 17. The method of claim 16,
Wherein the duct includes an inclined portion provided to guide the water introduced into the duct to the discharge port. 17. The method of claim 16,
Wherein the drying device further comprises a damper provided between the suction port and the discharge port to open and close the duct. 17. The method of claim 16,
The drying apparatus may further include a diffuser provided in the discharge port to spread air discharged through the discharge port,
Wherein the diffuser includes a hub portion, a rim portion, and a wing portion extending in the radial direction from the hub portion to the rim portion and formed to be inclined. 17. The method of claim 16,
Further comprising a sump and a water tank provided to receive water from the sump and mounted on the outside of the washing tank,
Wherein the duct and the water tank are integrally formed.

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